Counter molding machine



w. H. CHAMBERLAIN COUNTER MOLDINGIAMACHINE Filed .my 1o, 1941 Aug. 10,1943.

2 Sheets-Sheet 2 saddle I 03 bolted to a tray |04 projecting from theyfront of the machine; the jaws; 32 can be opened "to allow insertion `ofthe blank by means of a flexible Bowden wire transmission mechanism,operated Vby a handle I6 mounted vat* the left hand side of the tray|04, as seen in Figs. 1 to 3.

The tensioning of the inner wire I|1 of the Bowden mechanismdrawstogether the rear ends of the levers I,of which the front ends'separate the studs 48 so 'as to force apart the levers 46 and thus openthe jaws; yupon release of the handle ||6, the spring 50 draws thelevers 46 to- Y gether, causing the jaws 32 to close upon thev blank.The operator then depresses the control pedal 14, causing the cam shaft66 to be set in y motion; the Scam shoe 65 forces down the crank arm 63,thereby raising the first crank arm 53 of operations will begin as soonas the pedal 14 e is depressed. In this way, there is obtained a jawsare maintained open by the table movement.

The fall of the carrier under the action of the springs |52,whenreleased by the opening of the jaws 32, is preferably facilitated oraccelerated by means of a pair of spring-controlled lever arms |53mounted upon brackets |54 near the top of vvthle'stationary wiperMguides I I5; these arms hang with the carrier plate 29 and bringing theblank into'the gapof the mold, while the depressionf of the rod 94 bythe cam shaft will engage the mainclutch 21 for driving 'the shafts 2'6and `|9 to lift the plunger I3 and then tolowercthe wiper slide I4. 1 -Y5 downwards so as to be engaged by the carrier plate 29, forexamplebymeans of a pair of adjustablescrewsel55at the outer corners ofthe plate. 'Intermediately of their lengthgtheV arms As best seen' in'Fig.. 2,y a rocking lever Y|34 is(V pivoted at on the side of the'movinglink |36 which guides ythe plunger or'beam I3 in' its move-f' vmentproduced by theY eccentricV block |8;`the

front end of 'the lever |34 is cranked upwards andforked at |33 'toengage a trunnion member |39`upon a spring-loaded rod |40-pivotallyconouter casing |31 of the Bowden mechanism abuts.

The point at which the lever |34 performsits rocking movement isvdetermined by an adjustable stop mounted upon the frame of the machine;las shown, an angle-iron bracket |42 bolted at |43 .to the side'of theframe,v immediately'above the 'rear end of the lever, carries a verticalscrew |44 having its head placed downwards in the path of the lever,the' rear end v|45 of which is'cranked over laterally to meet thescrewhead. `The block |'4| andthe handle I I 6 are shownmounted uponv`an extension plate |46 at the-side-of the tray |04;

the blockis slidable along a slot |'41`1in line with' g the'rod |40,4while the handle ||6 is pivoted upon y A spring `-|49-- V coiledaroundthe-rod'I40 is engaged at an Vintermediate point in lits length byafork- |50 projectv a support |48 fixed inl the-plate.

ing down from-the edge ofV the plate |46;Y the part'of the springengaged between the fork |50 andthe block |4| ac ts to return thelatterto normal position, while the rest of the spring acts to holdthefmember |39 against an adjuster nut on the end of the rod |40. 1

'I'he operation ofthe handle H'will'tension i the 'inner wire II1 of thIBowden mechanism, as' already' described,- for opening the jaws 32 ,3one'c'ted to a slidable block I4| againsty which thel manually to allowinsertion of a blank at starting the machine, whereasv the automaticrocking of the'lever |34 due toithe rise of the plungerior beamf|3 will"compress 'the outer casing |31 for opening the jaws'mechanically-toallow insertionA of azblank in readinessifor a subsequent cycle'ofoperations; 'The mechanical release of the jaws by the'rise of theplunger' or beam I3 andv link |36 'takes place fiat' the 'moment when'the blank is grippedin thefmoldfthe Acarrier` isA then free to fall'.awayfr'om the mold; itsmovement being 'assisted by one ormore springs'|52 connected to the tray'l04'.y During this movement, the spring jawsremain open; so thatthe operator` Vhas time to insert a fresh blank inthe carrier before the descent of the plunger or beam I3 and returnofthe block I4I canallow the spring 50 to close the jaws upon the blank;.the next cycle |53 are ttedwith pins |56 extending horizon-4 tallythrough the wiper guides I I5 so'that .the inner extremities of thesepins come just below the bottom edge of the wiper I4 at the'.y limit ofits upward movement; the-pins I 5.6are1pressed inwards as the carrier`engages the arms-|53and therefore serve to prevent. the-wiper, slidefrom travelling farY enough to damage they mold orV other parts if thecarrier still remains in its `raised position. ySpringsr |51 arecoiledaround the pins |56, between the arms |53 and the facesof thewiper guidesV I I5, .to #provide the necessary .control for'the arms |53and' also to return the pins |56 as the carrier moves away; from themold.

In'the event of the descending wiper |4 striking the inwardly pressedpins .|56-,.theside rod 2| 'operating the wiper by means of the overheadrocking levers 22, 23 will be subjected to a strain which may beexcessive:;to avoid this, the rod 2| is preferably fitted --with-a;safety ldevice at the point where the lowerendjof its round portion isconnected to the crankedportion engaged -by the crank pin of thebottom,1shaft';l9,V vIn a convenient constructiom asv-illustrated inFig., 2,- the upper end ofthe cranked portionv 2|a isfitted withasteelextensionfor sleeve 2 I-b, brazed thereto, within whichthelower'end of theround portion v2| is slidable; three spring-loadedpoppets or cone-ended pins |58 are mounted radially in the sleeve 2lbso. astoengage -in a V-section groove |59 cut around the rod 2| insidethe sleeve,

the pins |58 .yielding t0 excessive pressure and allowing the rod 2|' todrop through the sleeve 2 Ib Vwithout causing damage.- Y 1 i A furthersafetydevice may be provided in conjunction with Vthe presenter bymounting the driv.- ing crank armr 63 upon the outer end of the rockingshaft 54 by means of a spring-loaded frictioncone device, which-permitsVthefcarrier to yield in the event' of` obstruction. As shown in Figs.l 1

4andfi, the crank arm 63 engaged by the shoe 65 upon the, cam shaft 66has its boss 63a rotatably mounted upon an 'internally coned vsleeve |60seatedV upon a. tapered portion v,54a of the rocking shaft 54; thissleeve has a quadrant |60a fixed to or formed integral with it'ltowardsone end. A

compression spring |6| fis mounted around the free end of theshaft,being retained by a washer p1ate1|62 securedby. a-screw |63 ttted intheend ofV the shaft; the spring 6| forces Vthe coned sleeve |60 intofirm contact with its tapered seating upon the shaft, the strengthof thespring being suflicient to prevent slip under all normal conditions. Thecrank arm 631s held in contact 'with there@ @wie renee-mm' ieee byeeeieisn "seated iinfthe arm Iand ,engaging an :arcuate slot' i265 in*the -quad1faiit,the free end Iotlti'e'llaolt being fitted-wiens congespring me `minstens1e sure; relative movement of the crank arrneandquadrant 46E' is "normally prevented "by Athe rictionalidrivingfeontacthetween :them under the pressure of the spring '15% "fandlis jalso controlled by a-sprin'g-loadedr-pawl1F68 mounted a'ffhousfsnapping into a "notch 411D *upon ithe iedge of the quadrant Wing Alf,however, the JpreSenter is db structedlin its rising movement,tliecanka-im B3 slips'n relation Lto the quadrant, forcmgthe ipaWl TF8but Vofthe notch lIFM), andimevesidly upon sleeve tLjWhile thexshaf-t 54 'and crank-atm 53 comet rest; re-settingof the crank-arm 53 takes Yyplace'antomet-icail-y upon tl-1e returnmevemen't,

by an equivalent slip-in the Icontrary sense Lwhen the carrier plate '29strikes the saddle H33 upon thetray :at tlhe iront of tfhe machine, theai'xnp63 being llifted by hander by any convenient device to 4'itsnormal position V(-at Whichk thev -pa'wl #B8 vsnaps back `4inte thenot-cliv` ifm) ;for leinengement.

byrftlie'she 135. :The object'ofrth'erictio icone mounting'of'the-sleeve 16B is 'to lpermit acciirate location ef *the crank 'a-rmy'63 "i'nTelation to fthe -rockingshaftl and ito the other crank-aridV415? 'afterthe `payvl Av|188 has been engaged inthe notch 110 npon lthe quad-rant flili'; fthe screw 'if'vfill then betightened'te compressthespring'fiifand `tn 'force the -sleeve Vi511' upon its taperedAseat-ing,

thus fixing Lthe @relative angular position of ythe ynie'clianicallybyK"the movemntef. the ltable in "7 order toppen tliejjaws'inrmfediatelyvthe bl'ank Vijs projedting troni the nild, marinaimeanslfoire-v Yleasingsaid iswsto admittheedge of a lbla-nklfeiengagement, and nieclianicalmeans '-io releasing'rr ieiid jaws fromtheir engagement'with saidedge einer the A e@meneer'ef een tiene' hasjentered y inte themen,saidImanuai-and said 'mechanica-1 ing movementrim'meser-1`i3iriga counter blanke-to iao'tervtlesciiibed,Laminierihaving-anl-pward roizykf-v for' engagement,iandfmeclianicahmeaiis-for 2re` leasing' said 'zie-ws frerh'thenfengagement vwith said-'ledge 'atterfthe remainder oi's'aidlbla'nkhas enter mechanical means operatingv liyapplying f com pression to #thefoute'r casing* effsaid 'mechanism. i

effin la counter ymening machine of the charn aeter V-iieserib'ed, fa"l-cari'iery -having Aan 'upward rocking movement ier presentingaico'iinter blank te lthe lmiiii; said carrier" including jaws YVadaptedtelen-gage@reountewblaekbythe @egefnoemauy f projecting trom the-mold,and-'mechanical means i V@imager er. f meaning-Lanai? a' flexibletrans;-

mission system c presented or Yasfsoon-'ais v'it hasr`been;giippel i-nthe mold; the Jcarrier lcanitiienzjmove away ffrenrthe imeid, with its'jaws-maintained open thi1s allowreturn of the table'fallows the -j awsto-recloselfand safety ydevices reduce tera minime-inthe' risk '-fdamage -to the 'blanks or counters onto theparts "of the machine. Y

What 4I'clairn's: i A l. In a counter molding machine of the chafsaidjaws from their:engagementwithfsa ,eige YVater lthe remainderl'offsadPela-niches en't'ered 1into the meld, said n'iecliaiiicalmeansinelefdinga meinber'niovatily :mounted `on Vand actuated by the 2.nacounterimoldinig machine of th acter described, acarrierhaving annpwardi @ing movement forpresentinga count-'erfbIankft-o ithe `Amold,said carrierinclndi-ng ifaws'adapted to feo f rise of thebo'ttem@lungen-ofthe fterk opening said aws-immediately uponftlfle g pI ngnwe-y ero-ni nie `1 bettelnpluriger.

vsaid v iawsw e e 5. In a counter moldi Y acter described, aearrier @orrpresentingja counter means dor -movihgrsaidcarrier towards and awayilimrnwh `lil-maid, Iand mechanical ineens "for 11e-rv jaws SiincludingfVaV {member -movably meuntedenltne .iaot'templunger and actuatedby lVtnemfioiienienttifiit.duringthe rise o-the lefcnttt m--i-ngthepperatorftonsert a res'hblaikbefore the ieasing. sa.

@lungen :of the-f-maicliine, -said aw remaining Vreleased fduiiin-gthe'f.in ovenfient1=ofV said "carrier te rock towards and away from themold, spring meafnsfffcr #gripping a .counter `blank lupon said membervin a position vfor"ienteiiifig the "mold" as said-membernrocks gtowardsfthe mold, manual ir-i'i -:'a{nfs`W ier neleasing vsaid@grippingmeans/at vthe iinseitionef a' counter",l iincuding ia" Amember' Qmbvably-r'nounted -on'the oottomrplungergoperated by the riseio'f thebottomfadt'er described, -a earrierfjpresentingjajcounter 'tofi'ock' 'towardsaway Troni the" mold', spring engage a wunsergeienk by" nieedgegnoimenyE y ormaily projectingfroinftlie moldlmanual iis-ienne# into @the meid,seid'. mamar anesaid Y mech ncal-fmeans'iope'ratingthrough:acommon y,.Bewdenkmeclianismim releasi-ng'f'said aws; usaid manualmeansboperatiiig byjappl-ying tension Ito onnected'fbtweensaidlever andng machine of tl'ke Y ee-y argitii teefde'snt gef.

1:15', 1n aeounteifmolding-machine v-cvf'the cnaf'- Y :IViacte'rldesicribeL acaver fier presenting a counter blank to the mold,comprising a memberfafdapted ,Y

ariktherein, and means f insertion of' a. counter b lanlrl therein, andmeans operatedby the bottom plungepof the machine at ia-variablepointfin itsrlsefor releasing said` gripping means afterentry ofA thecounter blankV into the mold, said ygrippingmeans then rremainingreleased asl said-memberrocks 'away from the mold and untilacorresponding,variable point in thegdescentof the bottomA plunger.8.Ir1.acounte'rr molding machine-of the character described, acarrierfor'presenting a counter blankto the mold, means for movingsaid carriertowards and away ,from the mold, means for dis? engaging the counter:blankfrom saidcarrier in advance ofthe-descent of the wiperof ythemachine, and means for assisting the movement of said carrier-away fromthe mold after entry of the countergblank-into the mold, said lassistingmeans including ai spring-controlled arm 'mounted upon a wiper guide ofthe machine and engaged; by said.V carrier as git moves towards the m01djf 'vi n, :Y i. l. I na counter molding machine of thecharacterrvdescribed, a carrier for presenting a counter blank to themold,means for moving said carrier towards and ,-away nfrom themold-means for disengaging the blank from said carrier'fin advance ofthedescent of the` wiper; of .the machine, and safety means for preventingdamage by the Vdescent of Y the wiper before movement-of said carrieraway. from the .mold,sai d safety means `including aSpring-controlled.armmounted upon a wiper guide of theimachine,andfengaged -by said carrier as it moves towards the mold, `anda pinslidable lthrough the vwiper guide into the path of the wiper, saidpinbeing controlled .by`

engaging the blank from said carrierin advance ofthedescent of the-Wiper`ofi-.the machineand safetyv ,meansr for preventing-damage by theydescent of the wiper before movement of. said carrier away from themold,`said lsafety means including-afspring-controlledarm mounted upon fa wiper guideof Athe machine andengaged by said-carrieres it ,movestowards V,the mold, agpin slidable ythroughthe wiper guideginto the path.of the wiper,` saidpin` being controlled by said arm, and` a yieldingconnection in the drivev to `the-Wiper. i f l Y j.

3. 11A'. VIn a counter molding machine of the characterdescribed, acarrier for presenting a counter blank to the mold, arocking shafi-l formoving said `carrier towards and vaway from themold, van operatingVcrankfuponsaid shaft, a frictiona-l drive connection fromsaid` crank'tosaid shaft, saidfrictional drive connection beingadapted to yield in'the event of obstruction to the movement of said carrier towardsthernold, and means for limiting the slipin 'said ,frictlonal drive ccny112. In a counter molding machine of the char- `ac'ter describedacarrier for-presenting@ counterv blank tothe vmold, a rockingrshaf-tAfor' lmoving .drive connectionfrom said crankfto `said shaft,

. said friotional. drive connection being adapted v7ov Ysaid carriertowards 'and awayjr'om 'the mold, 'en operatingcrank Aupon said shaftafrictional Vtom plunger.

.mentiof said carrier towards the'mold, means for limiting thel slip insaid frictional drive connection from saidcrank, and anauxiliary driveconnection to saidr shaft,.sad -auxiliarydrive connectionV serving tolocate"the-initial` position of sai-d shaft.-

V v. v13..In a counter molding machine of the character described,acarrierhaving ari-,upward rock- Y ingrmovement vforpresenting .aVcounter-'blank to themold,said carrier including jaws adapted to engagea counter blank by thegedge normally projecting from the mold, andmechanical means for operating said jaws by the movements o f thebottomplungerV of the machine, said mechanical means being actuatedby-the rise of. the bottom plunger iso-release ysaid jaws from theirengagement with said edge after the remainder of the blank has enteredinto the mold butV being ac,- tuated inthe reverse sense for theengagement of another blankduring the descent of the botjlfi. Inacounter molding machineof the character4 described, a carrier having anupward rocking movement for .presenting la counter blank to thelkrnold,-said carrier includingjaws adapted' to engage a counter blank bytheedglenormally projecting from the mold, manual` means for t.releasing said jaws to admit the edge of a blank 'for` engagement bysaid jaws, and mechanical .means for releasing said'vjawsfrom-theirengagement with said edgeafter the remainder of the blank hasentered into the mold,v said mechanical meansbeingfactuated to releasesaid jaws .by the .rise ofthe bottom plunger Yof the machine but beingactuated -in the reverse Sense for the engagement of ano't-her'blankduringthedescent ofthe bottom plunger; and said manual means enablinganoperator to release vsaid jaws even after. such reverse actuation.y ofsaid` mechanical means for engagement of another blank.4 A

l15. In a countermoldi'ngA machine of the character described, a carrierVfor presentinga counter blankfto the mold,.said carrier includingspringoperated jaws Vfor engaging thecounter blank by the edge normallyprojecting from the mold,

means for movingA said carrier towards land away from themold, andmechanicalmeans for releasingfsaid jaws including a` member movablymounted ongthe. bottom plunger.. of vthe-machine and.T actuated. by therise offthesbottom plunger,

fsaidrjaws remainingreleased-,during the move- 4,ment of saidcarrierL-awayirom ,the moldand until the descent ofthe bottom plunger,and .said mechanical means lbeing actuated in .reverse sense duringthe'descentof Vthe b ottom lplunger for engagement of another counterblank by said jaws. j

16. *Ina counter' moldin'gmachineof the character described, acarrier.for presenting a counter blank to the mold, comprising a. member adapted.to rock ktowards and `away from the mold, spring meansfor gripping-a.counter blank upon lsaid member Vin a position forentering the mold assaidv member rocks towards the mold, manual ymeans forV releasing saidgripping means at the insertion' of Ya counterblank therein, and meanssaid grippingV means after entry soif-the counter blank into the moldand immediately upon the .gripping of. the blank in 'the,}mold, saidgripping means then remaining releasedaszsaid rst-mentioned memberrocks-.away from themold and 'until ,dans-i. 0f. the. bottom plunger,`but being re-engaged automatically during descentoftlfie bottom plungerfor gripping anotherY counter blank, subject to control by said manualreleasing mean-s.

to rock towards and away `from the mo-ld, spring means for gripping acounter blank upon said member in a position for enteringthe mold assaid member rocks towards the mold, and means actuated by the bottomv.pluri-geref thermachine at a Variable pointin its rise for releasingsaid gripping meansafter entry of the counter blank into'the mold, saidgripping means then remain- :fing released` as said member rocks awayfrom the mold and until a corresponding Variable point in Y the descentof thebottom plunger, .butbeing reengaged automatically during furtherdescent of the bottom plunger for gripping another counter y 1'0 blank.

WLLIAM HEDGER CHAMBERLAIN.

